Validate Bazel version is specified for tasks in presubmit.yml file

[meteorcloudy]

Addressing #133

From now on, the presubmit.yml file must explicitly specify which Bazel versions should be used for testing this module.

It's recommended to add matrix testing for all supported Bazel LTS releases, for example:

diff --git a/modules/rules_go/0.40.1/presubmit.yml b/modules/rules_go/0.40.1/presubmit.yml
index def6f3a..bad2b7d 100644
--- a/modules/rules_go/0.40.1/presubmit.yml
+++ b/modules/rules_go/0.40.1/presubmit.yml
@@ -5,10 +5,14 @@ matrix:
     - ubuntu2004
     - macos
     - windows
+  bazel:
+    - 6.x
+    - 7.x
 tasks:
   verify_targets:
     name: Verify build targets
     platform: ${{ platform }}
+    bazel: ${{ bazel }}
     build_targets:
       - '@rules_go//go/tools/bzltestutil/...'
 bcr_test_module:
@@ -20,10 +24,14 @@ bcr_test_module:
       - ubuntu2004
       - macos
       - windows
+    bazel:
+      - 6.x
+      - 7.x
   tasks:
     run_test_module:
       name: Run test module
       platform: ${{ platform }}
+      bazel: ${{ bazel }}
       build_targets:
         - //...
         - '@go_default_sdk//...'

The following changes has been made to adapt this change:

• Set default bazel versions to be tested #1373
• Set default Bazel versions to be tested bazel-contrib/rules-template#105